Polvo à Lagareiro is a traditional Portuguese dish that features octopus cooked in the style of a 'lagareiro,' which refers to the use of olive oil. The octopus is first boiled until tender, then roasted in the oven with a generous amount of olive oil, garlic, and herbs. The result is a tender and flavorful octopus with a crispy exterior. Polvo à Lagareiro is often served with boiled potatoes and a drizzle of olive oil. It is a delicious and unique seafood dish that is popular in coastal regions of Portugal.